DIRECT BLACK 19
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- Category :
Dyestuffs and Pigments/Direct Dyes
- CAS NO : 6428-31-5
- EC NO : 229-208-1
- Molecular Formula : C34H27N13Na2S2O7
- Main Specifications :
- Synonyms : C.I. 35255;C.I. Direct Black 19;C.I. Direct Black 19 (VAN);C.I. Direct Black 19, disodium salt;Direct Fast Black G;C.I.Direct Black 19;disodium (3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonate;(3E)-5-amino-6-[(E)-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}diazenyl]-3-(2-{4-[(E)-(2,4-diaminophenyl)diazenyl]phenyl}hydrazinylidene)-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid;Direct Black G;
Package: 25kg bag
Uses : leather,cotton
Molecular Structure:
Product description:
DIRECT BLACK 19
Our grade name: DIRECT BLACK VB
COUNTERTYPE: RIFAZOL BLACK GR, Sumilight Black G
DIRECT BLACK 19
C. I. 35255
CAS No: 6428-31-5
EINECS: 229-208-1
Specification
APPEARANCE: BLACK POWDER
HEAT RESISTANCE: 300 C min
Dyeing depth: 4%
Fastness-Light (Xenon): 4
Fastness-Washing: 4-5
Rubbing-Dry: 4
Rubbing-Wet: 2
SPECIFIC SURFACE: 41 m2/g
DENSITY: 1.59 g/cm3
RESIDUE ON 80 MESH: 5.0% max
WATER SOLUBLE: 1.0% max
VOLATITE 105 C: 1.0% max
TINTING STRENGTH: 100%-200%
HS CODE: 32041400
Product features:
1. Good solubility and leveling property.
2. Excellent black dye with little discoloration in the after treatment.
3. Applicable for pad dyeing and dye with hydrogen peroxide.
4. Medium color fastness; Applicable under high temperature and pressure.
Application:
1. Dyeing for cotton, viscose, polyester/cotton, wool/viscose and printing of pure silk.
2. Dyeing for leather.
3. Dyeing for black writing paper, shoe paper board and corrugated paper, with high exhaust rate of dyeing and good light fastness
Packing: 25kg net each kraft carton or iron drum, 500kg net PP/PE bag, or special package as per the customer's requirements.
Other related direct dyes:
Direct Black 1, 9, 17, 19, 22, 29, 38, 56, 80, 168, 173, 239
Direct Green 1, 6
Direct Red 13, 18, 23, 28, 31, 80, 81, 83, 224, 227, 239, 243, 254
Direct Blue 2, 6, 15, 67, 70, 71, 75, 78, 80, 86, 106, 108, 151, 199, 200, 201, 274, 281, 297, 301
Direct Brown 1, 2, 44, 95, 115, 116, 210, 223, 227
Direct Yellow 4, 11, 12, 27, 36, 44, 50, 86, 106, 131, 132, 142, 147, 161
Direct Orange 2, 7, 15, 26, 39, 80, 102, 118
Direct Violet 9, 35, 66
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